研究了存在非线性Kerr介质时耦合双原子与单模压缩真空场相互作用系统的Pancharatnam相位特性.选取合适的初始条件并运用旋波近似,通过解薛定谔方程求出Pancharatnam相位的表示形式,并对此相位进行数值分析.结果表明:耦合双原子处于任意初态,随着原子与光场相互作用强度、两个二能级原子偶极-偶极耦合强度和非线性Kerr介质非线性的增大,Pancharatnam相位演化的频率都显著增长.耦合双原子初态同处激发态时,Pancharatnam相位演化有明显的振荡上升(或振荡下降)趋势.耦合双原子初态只有一个处于激发态时,随着Kerr介质非线性作用的增强,Pancharatnam相位演化变混乱.
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